1、3‑in‑1 functions can display speed ,course angle and mileage, which is practical in use. 2、Equipped with curved glass (with anti‑fog function), IP67 waterproof and dustproof grade. 3、There is a snap together with the harness connector, for best and firmly connected, in order that the gauges could work even in strong viberation 4、With stepper motor, used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision etc. 5、Easy to install, no complicated tools required, convenient and easy for you to use. Item Type: Speed Gauge Material: Plastic + Metal Fixing Dimension: 85mm(3-3/8in) Waterproof Level: IP67 Waterproof and Dustproof Grade Working Volt: 8-16V Working Current: <=100mA Working Temperature: -30-75℃ Storage Temperature: -40-85℃ Fitment: For 12V 24V Car Motorcycle Boat ect. 1 x Speed Gauge 1 x Connecting Wire 1 x GPS Antenna 1 x Manual